AA-Briefcase v1.1

We haven't written a description for this benchmark yet; see the card notes below for how each maker ran it.

How each maker reported it

Claude Opus 5.5 Table 8.1.A, p.174
Claude results use adaptive thinking at max effort, averaged over five trials (Terminal-Bench 4.0 at xhigh). Competitor figures come from the developers' own published results.
Claude Sonnet 5.5 Table 8.1.A, p.109
Claude results use adaptive thinking at max effort with default sampling, averaged over five trials. Competitor figures come from the developers' own published system cards or leaderboards.
Claude Haiku 5.5 Table 8.1.A, p.111
Haiku 5.5 results use adaptive thinking at max effort with default sampling, averaged over five trials. FrontierCode is shown at max effort (Sonnet 5.5 scores 52.1 at xhigh). OSWorld is the offline subset; GPT-6 Luna was run by Anthropic on the same tasks. Other competitor figures come from the developers' own published results.

Only each model's own maker's number is shown; scores a maker reports for rival models are left out.